/Engine/Plugins/Online/OnlineSubsystem/Source/Public/Interfaces/OnlinePartyInterface.h
Notification when an invite has been removed
typedef TMulticastDelegate_ThreeParams< void, const [FUniqueNetId](API\Runtime\CoreOnline\Online\FUniqueNetId) &, const [IOnlinePartyJoinInfo](API\Plugins\OnlineSubsystem\Interfaces\IOnlinePartyJoinInfo) &, [EPartyInvitationRemovedReason](API\Plugins\OnlineSubsystem\Interfaces\EPartyInvitationRemovedReason) > FOnPartyInviteRemovedEx